Further Information


Some of the books I have found useful and interesting

Colossus : The secrets of Bletchley Park's code-breaking computers

By B.Jack Copeland and others


Colossus Bletchley Park's Greatest Secret

By Paul Gannon

Breaking Teleprinter Ciphers at Bletchley Park: An Edition of I.J. Good, D. Michie and G. Timms:

General Report on Tunny with Emphasis on Statistical Methods (1945)


The Code Book: The Secret History of Codes and Code-breaking

By Simon Singh

ISBN 9781843543312 (Paperback)

No details on Colossus, although a great chapter on Enigma, if you want to know more about codes and code-breaking, this is a great book. Everything from Ancient Egypt to Quantum Cryptography.

Websites and Links

The National Museum of Computing - The Colossus Rebuild


The story of the rebuild of the world's first electronic computer ... Definately worth a visit if you can.

A great page giving a really nice visual overview of how Lorenz worked and was broken.

Bill Tutte Memorial Fund


Information about code breaking and Bill Tutte's contribution